<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8" />
		<title>demo</title>
	</head>
	<body>
		<script type="text/javascript" >

			// let obj = {a:'a',b:'b',c:'c'}
			// let obj = {a,b,c}//上方代码并不能这样简写，会报错

		</script>
	</body>
</html>